Raspy audio from K2

[John Lonigro]

I recently finished building the KSB2 and did the alignment on the
filters.  Everything seems to be working as advertised, except on
transmit my voice sounds raspy.  I haven't had time to dig into the
problem yet, but I did try 3 separate mics and got the same result.  For
my test, I transmitted at 1 Watt into a dummy load while listening on my
Icom 706 with headphones.  My first assumption is that I simply need to
tweak the transmit filter, but I'm asking if anyone else has had the
same symptom that was perhaps caused by something else.  For example, is
it possible the two radios are simply too close to each other for a good
audio test?  They are on separate supplies and were about 6 feet apart
during the test.

Thanks and 73's,

John AA0VE
K2#3401
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[Trevor Day]

In message <[hidden email]>, John R. Lonigro
<[hidden email]> writes

>I recently finished building the KSB2 and did the alignment on the
>filters. Everything seems to be working as advertised, except on
>transmit my voice sounds raspy.  I haven't had time to dig into the
>problem yet, but I did try 3 separate mics and got the same result.
>For my test, I transmitted at 1 Watt into a dummy load while listening
>on my Icom 706 with headphones.  My first assumption is that I simply
>need to tweak the transmit filter, but I'm asking if anyone else has
>had the same symptom that was perhaps caused by something else.  For
>example, is it possible the two radios are simply too close to each
>other for a good audio test? They are on separate supplies and were
>about 6 feet apart during the test.

Hi John, one possibility is that the transformer of the power supply is
too close to the K2, try some additional physical separation and see if
that does the trick.

Trev G3ZYY
--
Trevor Day
Sunny Saltash

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